[Mlir-commits] [mlir] [mlir][sparse] Fix output entry count for loose-compressed tensors (PR #224167)

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Mon Oct 5 20:06:28 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorConversion.cpp mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorRewriting.cpp --diff_from_common_commit
``````````

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in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
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View the diff from clang-format here.
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``````````diff
diff --git a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorRewriting.cpp b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorRewriting.cpp
index 35a11b8b1..7541d4973 100644
--- a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorRewriting.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorRewriting.cpp
@@ -1544,14 +1544,14 @@ struct OutRewriter : public OpRewritePattern<OutOp> {
     // that sparse iteration will emit before creating the writer.
     Value zero = constantIndex(rewriter, loc, 0);
     Value one = constantIndex(rewriter, loc, 1);
-    auto count = ForeachOp::create(
-        rewriter, loc, src, ValueRange{zero},
-        [one](OpBuilder &builder, Location loc, ValueRange, Value,
-              ValueRange iterArgs) {
-          Value next = arith::AddIOp::create(builder, loc, iterArgs.front(),
-                                             one);
-          sparse_tensor::YieldOp::create(builder, loc, next);
-        });
+    auto count =
+        ForeachOp::create(rewriter, loc, src, ValueRange{zero},
+                          [one](OpBuilder &builder, Location loc, ValueRange,
+                                Value, ValueRange iterArgs) {
+                            Value next = arith::AddIOp::create(
+                                builder, loc, iterArgs.front(), one);
+                            sparse_tensor::YieldOp::create(builder, loc, next);
+                          });
     Value numEntries = count.getResult(0);
 
     // Allocate a temporary buffer for storing dimension-sizes/coordinates.

``````````

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https://github.com/llvm/llvm-project/pull/224167


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